/*
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* Copyright (c) 2004 Topspin Communications. All rights reserved.
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* Copyright (c) 2005, 2006, 2007 Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2005, 2006, 2007, 2008 Mellanox Technologies. All rights reserved.
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* Copyright (c) 2004 Voltaire, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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|
#include <linux/gfp.h>
|
#include <linux/export.h>
|
|
#include <linux/mlx4/cmd.h>
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#include <linux/mlx4/qp.h>
|
|
#include "mlx4.h"
|
#include "icm.h"
|
|
/* QP to support BF should have bits 6,7 cleared */
|
#define MLX4_BF_QP_SKIP_MASK 0xc0
|
#define MLX4_MAX_BF_QP_RANGE 0x40
|
|
void mlx4_qp_event(struct mlx4_dev *dev, u32 qpn, int event_type)
|
{
|
struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table;
|
struct mlx4_qp *qp;
|
|
spin_lock(&qp_table->lock);
|
|
qp = __mlx4_qp_lookup(dev, qpn);
|
if (qp)
|
refcount_inc(&qp->refcount);
|
|
spin_unlock(&qp_table->lock);
|
|
if (!qp) {
|
mlx4_dbg(dev, "Async event for none existent QP %08x\n", qpn);
|
return;
|
}
|
|
qp->event(qp, event_type);
|
|
if (refcount_dec_and_test(&qp->refcount))
|
complete(&qp->free);
|
}
|
|
/* used for INIT/CLOSE port logic */
|
static int is_master_qp0(struct mlx4_dev *dev, struct mlx4_qp *qp, int *real_qp0, int *proxy_qp0)
|
{
|
/* this procedure is called after we already know we are on the master */
|
/* qp0 is either the proxy qp0, or the real qp0 */
|
u32 pf_proxy_offset = dev->phys_caps.base_proxy_sqpn + 8 * mlx4_master_func_num(dev);
|
*proxy_qp0 = qp->qpn >= pf_proxy_offset && qp->qpn <= pf_proxy_offset + 1;
|
|
*real_qp0 = qp->qpn >= dev->phys_caps.base_sqpn &&
|
qp->qpn <= dev->phys_caps.base_sqpn + 1;
|
|
return *real_qp0 || *proxy_qp0;
|
}
|
|
static int __mlx4_qp_modify(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
|
enum mlx4_qp_state cur_state, enum mlx4_qp_state new_state,
|
struct mlx4_qp_context *context,
|
enum mlx4_qp_optpar optpar,
|
int sqd_event, struct mlx4_qp *qp, int native)
|
{
|
static const u16 op[MLX4_QP_NUM_STATE][MLX4_QP_NUM_STATE] = {
|
[MLX4_QP_STATE_RST] = {
|
[MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP,
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[MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP,
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[MLX4_QP_STATE_INIT] = MLX4_CMD_RST2INIT_QP,
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},
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[MLX4_QP_STATE_INIT] = {
|
[MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP,
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[MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP,
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[MLX4_QP_STATE_INIT] = MLX4_CMD_INIT2INIT_QP,
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[MLX4_QP_STATE_RTR] = MLX4_CMD_INIT2RTR_QP,
|
},
|
[MLX4_QP_STATE_RTR] = {
|
[MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP,
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[MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP,
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[MLX4_QP_STATE_RTS] = MLX4_CMD_RTR2RTS_QP,
|
},
|
[MLX4_QP_STATE_RTS] = {
|
[MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP,
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[MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP,
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[MLX4_QP_STATE_RTS] = MLX4_CMD_RTS2RTS_QP,
|
[MLX4_QP_STATE_SQD] = MLX4_CMD_RTS2SQD_QP,
|
},
|
[MLX4_QP_STATE_SQD] = {
|
[MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP,
|
[MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP,
|
[MLX4_QP_STATE_RTS] = MLX4_CMD_SQD2RTS_QP,
|
[MLX4_QP_STATE_SQD] = MLX4_CMD_SQD2SQD_QP,
|
},
|
[MLX4_QP_STATE_SQER] = {
|
[MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP,
|
[MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP,
|
[MLX4_QP_STATE_RTS] = MLX4_CMD_SQERR2RTS_QP,
|
},
|
[MLX4_QP_STATE_ERR] = {
|
[MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP,
|
[MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP,
|
}
|
};
|
|
struct mlx4_priv *priv = mlx4_priv(dev);
|
struct mlx4_cmd_mailbox *mailbox;
|
int ret = 0;
|
int real_qp0 = 0;
|
int proxy_qp0 = 0;
|
u8 port;
|
|
if (cur_state >= MLX4_QP_NUM_STATE || new_state >= MLX4_QP_NUM_STATE ||
|
!op[cur_state][new_state])
|
return -EINVAL;
|
|
if (op[cur_state][new_state] == MLX4_CMD_2RST_QP) {
|
ret = mlx4_cmd(dev, 0, qp->qpn, 2,
|
MLX4_CMD_2RST_QP, MLX4_CMD_TIME_CLASS_A, native);
|
if (mlx4_is_master(dev) && cur_state != MLX4_QP_STATE_ERR &&
|
cur_state != MLX4_QP_STATE_RST &&
|
is_master_qp0(dev, qp, &real_qp0, &proxy_qp0)) {
|
port = (qp->qpn & 1) + 1;
|
if (proxy_qp0)
|
priv->mfunc.master.qp0_state[port].proxy_qp0_active = 0;
|
else
|
priv->mfunc.master.qp0_state[port].qp0_active = 0;
|
}
|
return ret;
|
}
|
|
mailbox = mlx4_alloc_cmd_mailbox(dev);
|
if (IS_ERR(mailbox))
|
return PTR_ERR(mailbox);
|
|
if (cur_state == MLX4_QP_STATE_RST && new_state == MLX4_QP_STATE_INIT) {
|
u64 mtt_addr = mlx4_mtt_addr(dev, mtt);
|
context->mtt_base_addr_h = mtt_addr >> 32;
|
context->mtt_base_addr_l = cpu_to_be32(mtt_addr & 0xffffffff);
|
context->log_page_size = mtt->page_shift - MLX4_ICM_PAGE_SHIFT;
|
}
|
|
if ((cur_state == MLX4_QP_STATE_RTR) &&
|
(new_state == MLX4_QP_STATE_RTS) &&
|
dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
|
context->roce_entropy =
|
cpu_to_be16(mlx4_qp_roce_entropy(dev, qp->qpn));
|
|
*(__be32 *) mailbox->buf = cpu_to_be32(optpar);
|
memcpy(mailbox->buf + 8, context, sizeof(*context));
|
|
((struct mlx4_qp_context *) (mailbox->buf + 8))->local_qpn =
|
cpu_to_be32(qp->qpn);
|
|
ret = mlx4_cmd(dev, mailbox->dma,
|
qp->qpn | (!!sqd_event << 31),
|
new_state == MLX4_QP_STATE_RST ? 2 : 0,
|
op[cur_state][new_state], MLX4_CMD_TIME_CLASS_C, native);
|
|
if (mlx4_is_master(dev) && is_master_qp0(dev, qp, &real_qp0, &proxy_qp0)) {
|
port = (qp->qpn & 1) + 1;
|
if (cur_state != MLX4_QP_STATE_ERR &&
|
cur_state != MLX4_QP_STATE_RST &&
|
new_state == MLX4_QP_STATE_ERR) {
|
if (proxy_qp0)
|
priv->mfunc.master.qp0_state[port].proxy_qp0_active = 0;
|
else
|
priv->mfunc.master.qp0_state[port].qp0_active = 0;
|
} else if (new_state == MLX4_QP_STATE_RTR) {
|
if (proxy_qp0)
|
priv->mfunc.master.qp0_state[port].proxy_qp0_active = 1;
|
else
|
priv->mfunc.master.qp0_state[port].qp0_active = 1;
|
}
|
}
|
|
mlx4_free_cmd_mailbox(dev, mailbox);
|
return ret;
|
}
|
|
int mlx4_qp_modify(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
|
enum mlx4_qp_state cur_state, enum mlx4_qp_state new_state,
|
struct mlx4_qp_context *context,
|
enum mlx4_qp_optpar optpar,
|
int sqd_event, struct mlx4_qp *qp)
|
{
|
return __mlx4_qp_modify(dev, mtt, cur_state, new_state, context,
|
optpar, sqd_event, qp, 0);
|
}
|
EXPORT_SYMBOL_GPL(mlx4_qp_modify);
|
|
int __mlx4_qp_reserve_range(struct mlx4_dev *dev, int cnt, int align,
|
int *base, u8 flags)
|
{
|
u32 uid;
|
int bf_qp = !!(flags & (u8)MLX4_RESERVE_ETH_BF_QP);
|
|
struct mlx4_priv *priv = mlx4_priv(dev);
|
struct mlx4_qp_table *qp_table = &priv->qp_table;
|
|
if (cnt > MLX4_MAX_BF_QP_RANGE && bf_qp)
|
return -ENOMEM;
|
|
uid = MLX4_QP_TABLE_ZONE_GENERAL;
|
if (flags & (u8)MLX4_RESERVE_A0_QP) {
|
if (bf_qp)
|
uid = MLX4_QP_TABLE_ZONE_RAW_ETH;
|
else
|
uid = MLX4_QP_TABLE_ZONE_RSS;
|
}
|
|
*base = mlx4_zone_alloc_entries(qp_table->zones, uid, cnt, align,
|
bf_qp ? MLX4_BF_QP_SKIP_MASK : 0, NULL);
|
if (*base == -1)
|
return -ENOMEM;
|
|
return 0;
|
}
|
|
int mlx4_qp_reserve_range(struct mlx4_dev *dev, int cnt, int align,
|
int *base, u8 flags, u8 usage)
|
{
|
u32 in_modifier = RES_QP | (((u32)usage & 3) << 30);
|
u64 in_param = 0;
|
u64 out_param;
|
int err;
|
|
/* Turn off all unsupported QP allocation flags */
|
flags &= dev->caps.alloc_res_qp_mask;
|
|
if (mlx4_is_mfunc(dev)) {
|
set_param_l(&in_param, (((u32)flags) << 24) | (u32)cnt);
|
set_param_h(&in_param, align);
|
err = mlx4_cmd_imm(dev, in_param, &out_param,
|
in_modifier, RES_OP_RESERVE,
|
MLX4_CMD_ALLOC_RES,
|
MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
|
if (err)
|
return err;
|
|
*base = get_param_l(&out_param);
|
return 0;
|
}
|
return __mlx4_qp_reserve_range(dev, cnt, align, base, flags);
|
}
|
EXPORT_SYMBOL_GPL(mlx4_qp_reserve_range);
|
|
void __mlx4_qp_release_range(struct mlx4_dev *dev, int base_qpn, int cnt)
|
{
|
struct mlx4_priv *priv = mlx4_priv(dev);
|
struct mlx4_qp_table *qp_table = &priv->qp_table;
|
|
if (mlx4_is_qp_reserved(dev, (u32) base_qpn))
|
return;
|
mlx4_zone_free_entries_unique(qp_table->zones, base_qpn, cnt);
|
}
|
|
void mlx4_qp_release_range(struct mlx4_dev *dev, int base_qpn, int cnt)
|
{
|
u64 in_param = 0;
|
int err;
|
|
if (!cnt)
|
return;
|
|
if (mlx4_is_mfunc(dev)) {
|
set_param_l(&in_param, base_qpn);
|
set_param_h(&in_param, cnt);
|
err = mlx4_cmd(dev, in_param, RES_QP, RES_OP_RESERVE,
|
MLX4_CMD_FREE_RES,
|
MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
|
if (err) {
|
mlx4_warn(dev, "Failed to release qp range base:%d cnt:%d\n",
|
base_qpn, cnt);
|
}
|
} else
|
__mlx4_qp_release_range(dev, base_qpn, cnt);
|
}
|
EXPORT_SYMBOL_GPL(mlx4_qp_release_range);
|
|
int __mlx4_qp_alloc_icm(struct mlx4_dev *dev, int qpn)
|
{
|
struct mlx4_priv *priv = mlx4_priv(dev);
|
struct mlx4_qp_table *qp_table = &priv->qp_table;
|
int err;
|
|
err = mlx4_table_get(dev, &qp_table->qp_table, qpn);
|
if (err)
|
goto err_out;
|
|
err = mlx4_table_get(dev, &qp_table->auxc_table, qpn);
|
if (err)
|
goto err_put_qp;
|
|
err = mlx4_table_get(dev, &qp_table->altc_table, qpn);
|
if (err)
|
goto err_put_auxc;
|
|
err = mlx4_table_get(dev, &qp_table->rdmarc_table, qpn);
|
if (err)
|
goto err_put_altc;
|
|
err = mlx4_table_get(dev, &qp_table->cmpt_table, qpn);
|
if (err)
|
goto err_put_rdmarc;
|
|
return 0;
|
|
err_put_rdmarc:
|
mlx4_table_put(dev, &qp_table->rdmarc_table, qpn);
|
|
err_put_altc:
|
mlx4_table_put(dev, &qp_table->altc_table, qpn);
|
|
err_put_auxc:
|
mlx4_table_put(dev, &qp_table->auxc_table, qpn);
|
|
err_put_qp:
|
mlx4_table_put(dev, &qp_table->qp_table, qpn);
|
|
err_out:
|
return err;
|
}
|
|
static int mlx4_qp_alloc_icm(struct mlx4_dev *dev, int qpn)
|
{
|
u64 param = 0;
|
|
if (mlx4_is_mfunc(dev)) {
|
set_param_l(¶m, qpn);
|
return mlx4_cmd_imm(dev, param, ¶m, RES_QP, RES_OP_MAP_ICM,
|
MLX4_CMD_ALLOC_RES, MLX4_CMD_TIME_CLASS_A,
|
MLX4_CMD_WRAPPED);
|
}
|
return __mlx4_qp_alloc_icm(dev, qpn);
|
}
|
|
void __mlx4_qp_free_icm(struct mlx4_dev *dev, int qpn)
|
{
|
struct mlx4_priv *priv = mlx4_priv(dev);
|
struct mlx4_qp_table *qp_table = &priv->qp_table;
|
|
mlx4_table_put(dev, &qp_table->cmpt_table, qpn);
|
mlx4_table_put(dev, &qp_table->rdmarc_table, qpn);
|
mlx4_table_put(dev, &qp_table->altc_table, qpn);
|
mlx4_table_put(dev, &qp_table->auxc_table, qpn);
|
mlx4_table_put(dev, &qp_table->qp_table, qpn);
|
}
|
|
static void mlx4_qp_free_icm(struct mlx4_dev *dev, int qpn)
|
{
|
u64 in_param = 0;
|
|
if (mlx4_is_mfunc(dev)) {
|
set_param_l(&in_param, qpn);
|
if (mlx4_cmd(dev, in_param, RES_QP, RES_OP_MAP_ICM,
|
MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A,
|
MLX4_CMD_WRAPPED))
|
mlx4_warn(dev, "Failed to free icm of qp:%d\n", qpn);
|
} else
|
__mlx4_qp_free_icm(dev, qpn);
|
}
|
|
struct mlx4_qp *mlx4_qp_lookup(struct mlx4_dev *dev, u32 qpn)
|
{
|
struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table;
|
struct mlx4_qp *qp;
|
|
spin_lock_irq(&qp_table->lock);
|
|
qp = __mlx4_qp_lookup(dev, qpn);
|
|
spin_unlock_irq(&qp_table->lock);
|
return qp;
|
}
|
|
int mlx4_qp_alloc(struct mlx4_dev *dev, int qpn, struct mlx4_qp *qp)
|
{
|
struct mlx4_priv *priv = mlx4_priv(dev);
|
struct mlx4_qp_table *qp_table = &priv->qp_table;
|
int err;
|
|
if (!qpn)
|
return -EINVAL;
|
|
qp->qpn = qpn;
|
|
err = mlx4_qp_alloc_icm(dev, qpn);
|
if (err)
|
return err;
|
|
spin_lock_irq(&qp_table->lock);
|
err = radix_tree_insert(&dev->qp_table_tree, qp->qpn &
|
(dev->caps.num_qps - 1), qp);
|
spin_unlock_irq(&qp_table->lock);
|
if (err)
|
goto err_icm;
|
|
refcount_set(&qp->refcount, 1);
|
init_completion(&qp->free);
|
|
return 0;
|
|
err_icm:
|
mlx4_qp_free_icm(dev, qpn);
|
return err;
|
}
|
|
EXPORT_SYMBOL_GPL(mlx4_qp_alloc);
|
|
int mlx4_update_qp(struct mlx4_dev *dev, u32 qpn,
|
enum mlx4_update_qp_attr attr,
|
struct mlx4_update_qp_params *params)
|
{
|
struct mlx4_cmd_mailbox *mailbox;
|
struct mlx4_update_qp_context *cmd;
|
u64 pri_addr_path_mask = 0;
|
u64 qp_mask = 0;
|
int err = 0;
|
|
if (!attr || (attr & ~MLX4_UPDATE_QP_SUPPORTED_ATTRS))
|
return -EINVAL;
|
|
mailbox = mlx4_alloc_cmd_mailbox(dev);
|
if (IS_ERR(mailbox))
|
return PTR_ERR(mailbox);
|
|
cmd = (struct mlx4_update_qp_context *)mailbox->buf;
|
|
if (attr & MLX4_UPDATE_QP_SMAC) {
|
pri_addr_path_mask |= 1ULL << MLX4_UPD_QP_PATH_MASK_MAC_INDEX;
|
cmd->qp_context.pri_path.grh_mylmc = params->smac_index;
|
}
|
|
if (attr & MLX4_UPDATE_QP_ETH_SRC_CHECK_MC_LB) {
|
if (!(dev->caps.flags2
|
& MLX4_DEV_CAP_FLAG2_UPDATE_QP_SRC_CHECK_LB)) {
|
mlx4_warn(dev,
|
"Trying to set src check LB, but it isn't supported\n");
|
err = -EOPNOTSUPP;
|
goto out;
|
}
|
pri_addr_path_mask |=
|
1ULL << MLX4_UPD_QP_PATH_MASK_ETH_SRC_CHECK_MC_LB;
|
if (params->flags &
|
MLX4_UPDATE_QP_PARAMS_FLAGS_ETH_CHECK_MC_LB) {
|
cmd->qp_context.pri_path.fl |=
|
MLX4_FL_ETH_SRC_CHECK_MC_LB;
|
}
|
}
|
|
if (attr & MLX4_UPDATE_QP_VSD) {
|
qp_mask |= 1ULL << MLX4_UPD_QP_MASK_VSD;
|
if (params->flags & MLX4_UPDATE_QP_PARAMS_FLAGS_VSD_ENABLE)
|
cmd->qp_context.param3 |= cpu_to_be32(MLX4_STRIP_VLAN);
|
}
|
|
if (attr & MLX4_UPDATE_QP_RATE_LIMIT) {
|
qp_mask |= 1ULL << MLX4_UPD_QP_MASK_RATE_LIMIT;
|
cmd->qp_context.rate_limit_params = cpu_to_be16((params->rate_unit << 14) | params->rate_val);
|
}
|
|
if (attr & MLX4_UPDATE_QP_QOS_VPORT) {
|
if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QOS_VPP)) {
|
mlx4_warn(dev, "Granular QoS per VF is not enabled\n");
|
err = -EOPNOTSUPP;
|
goto out;
|
}
|
|
qp_mask |= 1ULL << MLX4_UPD_QP_MASK_QOS_VPP;
|
cmd->qp_context.qos_vport = params->qos_vport;
|
}
|
|
cmd->primary_addr_path_mask = cpu_to_be64(pri_addr_path_mask);
|
cmd->qp_mask = cpu_to_be64(qp_mask);
|
|
err = mlx4_cmd(dev, mailbox->dma, qpn & 0xffffff, 0,
|
MLX4_CMD_UPDATE_QP, MLX4_CMD_TIME_CLASS_A,
|
MLX4_CMD_NATIVE);
|
out:
|
mlx4_free_cmd_mailbox(dev, mailbox);
|
return err;
|
}
|
EXPORT_SYMBOL_GPL(mlx4_update_qp);
|
|
void mlx4_qp_remove(struct mlx4_dev *dev, struct mlx4_qp *qp)
|
{
|
struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table;
|
unsigned long flags;
|
|
spin_lock_irqsave(&qp_table->lock, flags);
|
radix_tree_delete(&dev->qp_table_tree, qp->qpn & (dev->caps.num_qps - 1));
|
spin_unlock_irqrestore(&qp_table->lock, flags);
|
}
|
EXPORT_SYMBOL_GPL(mlx4_qp_remove);
|
|
void mlx4_qp_free(struct mlx4_dev *dev, struct mlx4_qp *qp)
|
{
|
if (refcount_dec_and_test(&qp->refcount))
|
complete(&qp->free);
|
wait_for_completion(&qp->free);
|
|
mlx4_qp_free_icm(dev, qp->qpn);
|
}
|
EXPORT_SYMBOL_GPL(mlx4_qp_free);
|
|
static int mlx4_CONF_SPECIAL_QP(struct mlx4_dev *dev, u32 base_qpn)
|
{
|
return mlx4_cmd(dev, 0, base_qpn, 0, MLX4_CMD_CONF_SPECIAL_QP,
|
MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
|
}
|
|
#define MLX4_QP_TABLE_RSS_ETH_PRIORITY 2
|
#define MLX4_QP_TABLE_RAW_ETH_PRIORITY 1
|
#define MLX4_QP_TABLE_RAW_ETH_SIZE 256
|
|
static int mlx4_create_zones(struct mlx4_dev *dev,
|
u32 reserved_bottom_general,
|
u32 reserved_top_general,
|
u32 reserved_bottom_rss,
|
u32 start_offset_rss,
|
u32 max_table_offset)
|
{
|
struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table;
|
struct mlx4_bitmap (*bitmap)[MLX4_QP_TABLE_ZONE_NUM] = NULL;
|
int bitmap_initialized = 0;
|
u32 last_offset;
|
int k;
|
int err;
|
|
qp_table->zones = mlx4_zone_allocator_create(MLX4_ZONE_ALLOC_FLAGS_NO_OVERLAP);
|
|
if (NULL == qp_table->zones)
|
return -ENOMEM;
|
|
bitmap = kmalloc(sizeof(*bitmap), GFP_KERNEL);
|
|
if (NULL == bitmap) {
|
err = -ENOMEM;
|
goto free_zone;
|
}
|
|
err = mlx4_bitmap_init(*bitmap + MLX4_QP_TABLE_ZONE_GENERAL, dev->caps.num_qps,
|
(1 << 23) - 1, reserved_bottom_general,
|
reserved_top_general);
|
|
if (err)
|
goto free_bitmap;
|
|
++bitmap_initialized;
|
|
err = mlx4_zone_add_one(qp_table->zones, *bitmap + MLX4_QP_TABLE_ZONE_GENERAL,
|
MLX4_ZONE_FALLBACK_TO_HIGHER_PRIO |
|
MLX4_ZONE_USE_RR, 0,
|
0, qp_table->zones_uids + MLX4_QP_TABLE_ZONE_GENERAL);
|
|
if (err)
|
goto free_bitmap;
|
|
err = mlx4_bitmap_init(*bitmap + MLX4_QP_TABLE_ZONE_RSS,
|
reserved_bottom_rss,
|
reserved_bottom_rss - 1,
|
dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
|
reserved_bottom_rss - start_offset_rss);
|
|
if (err)
|
goto free_bitmap;
|
|
++bitmap_initialized;
|
|
err = mlx4_zone_add_one(qp_table->zones, *bitmap + MLX4_QP_TABLE_ZONE_RSS,
|
MLX4_ZONE_ALLOW_ALLOC_FROM_LOWER_PRIO |
|
MLX4_ZONE_ALLOW_ALLOC_FROM_EQ_PRIO |
|
MLX4_ZONE_USE_RR, MLX4_QP_TABLE_RSS_ETH_PRIORITY,
|
0, qp_table->zones_uids + MLX4_QP_TABLE_ZONE_RSS);
|
|
if (err)
|
goto free_bitmap;
|
|
last_offset = dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW];
|
/* We have a single zone for the A0 steering QPs area of the FW. This area
|
* needs to be split into subareas. One set of subareas is for RSS QPs
|
* (in which qp number bits 6 and/or 7 are set); the other set of subareas
|
* is for RAW_ETH QPs, which require that both bits 6 and 7 are zero.
|
* Currently, the values returned by the FW (A0 steering area starting qp number
|
* and A0 steering area size) are such that there are only two subareas -- one
|
* for RSS and one for RAW_ETH.
|
*/
|
for (k = MLX4_QP_TABLE_ZONE_RSS + 1; k < sizeof(*bitmap)/sizeof((*bitmap)[0]);
|
k++) {
|
int size;
|
u32 offset = start_offset_rss;
|
u32 bf_mask;
|
u32 requested_size;
|
|
/* Assuming MLX4_BF_QP_SKIP_MASK is consecutive ones, this calculates
|
* a mask of all LSB bits set until (and not including) the first
|
* set bit of MLX4_BF_QP_SKIP_MASK. For example, if MLX4_BF_QP_SKIP_MASK
|
* is 0xc0, bf_mask will be 0x3f.
|
*/
|
bf_mask = (MLX4_BF_QP_SKIP_MASK & ~(MLX4_BF_QP_SKIP_MASK - 1)) - 1;
|
requested_size = min((u32)MLX4_QP_TABLE_RAW_ETH_SIZE, bf_mask + 1);
|
|
if (((last_offset & MLX4_BF_QP_SKIP_MASK) &&
|
((int)(max_table_offset - last_offset)) >=
|
roundup_pow_of_two(MLX4_BF_QP_SKIP_MASK)) ||
|
(!(last_offset & MLX4_BF_QP_SKIP_MASK) &&
|
!((last_offset + requested_size - 1) &
|
MLX4_BF_QP_SKIP_MASK)))
|
size = requested_size;
|
else {
|
u32 candidate_offset =
|
(last_offset | MLX4_BF_QP_SKIP_MASK | bf_mask) + 1;
|
|
if (last_offset & MLX4_BF_QP_SKIP_MASK)
|
last_offset = candidate_offset;
|
|
/* From this point, the BF bits are 0 */
|
|
if (last_offset > max_table_offset) {
|
/* need to skip */
|
size = -1;
|
} else {
|
size = min3(max_table_offset - last_offset,
|
bf_mask - (last_offset & bf_mask),
|
requested_size);
|
if (size < requested_size) {
|
int candidate_size;
|
|
candidate_size = min3(
|
max_table_offset - candidate_offset,
|
bf_mask - (last_offset & bf_mask),
|
requested_size);
|
|
/* We will not take this path if last_offset was
|
* already set above to candidate_offset
|
*/
|
if (candidate_size > size) {
|
last_offset = candidate_offset;
|
size = candidate_size;
|
}
|
}
|
}
|
}
|
|
if (size > 0) {
|
/* mlx4_bitmap_alloc_range will find a contiguous range of "size"
|
* QPs in which both bits 6 and 7 are zero, because we pass it the
|
* MLX4_BF_SKIP_MASK).
|
*/
|
offset = mlx4_bitmap_alloc_range(
|
*bitmap + MLX4_QP_TABLE_ZONE_RSS,
|
size, 1,
|
MLX4_BF_QP_SKIP_MASK);
|
|
if (offset == (u32)-1) {
|
err = -ENOMEM;
|
break;
|
}
|
|
last_offset = offset + size;
|
|
err = mlx4_bitmap_init(*bitmap + k, roundup_pow_of_two(size),
|
roundup_pow_of_two(size) - 1, 0,
|
roundup_pow_of_two(size) - size);
|
} else {
|
/* Add an empty bitmap, we'll allocate from different zones (since
|
* at least one is reserved)
|
*/
|
err = mlx4_bitmap_init(*bitmap + k, 1,
|
MLX4_QP_TABLE_RAW_ETH_SIZE - 1, 0,
|
0);
|
if (!err)
|
mlx4_bitmap_alloc_range(*bitmap + k, 1, 1, 0);
|
}
|
|
if (err)
|
break;
|
|
++bitmap_initialized;
|
|
err = mlx4_zone_add_one(qp_table->zones, *bitmap + k,
|
MLX4_ZONE_ALLOW_ALLOC_FROM_LOWER_PRIO |
|
MLX4_ZONE_ALLOW_ALLOC_FROM_EQ_PRIO |
|
MLX4_ZONE_USE_RR, MLX4_QP_TABLE_RAW_ETH_PRIORITY,
|
offset, qp_table->zones_uids + k);
|
|
if (err)
|
break;
|
}
|
|
if (err)
|
goto free_bitmap;
|
|
qp_table->bitmap_gen = *bitmap;
|
|
return err;
|
|
free_bitmap:
|
for (k = 0; k < bitmap_initialized; k++)
|
mlx4_bitmap_cleanup(*bitmap + k);
|
kfree(bitmap);
|
free_zone:
|
mlx4_zone_allocator_destroy(qp_table->zones);
|
return err;
|
}
|
|
static void mlx4_cleanup_qp_zones(struct mlx4_dev *dev)
|
{
|
struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table;
|
|
if (qp_table->zones) {
|
int i;
|
|
for (i = 0;
|
i < sizeof(qp_table->zones_uids)/sizeof(qp_table->zones_uids[0]);
|
i++) {
|
struct mlx4_bitmap *bitmap =
|
mlx4_zone_get_bitmap(qp_table->zones,
|
qp_table->zones_uids[i]);
|
|
mlx4_zone_remove_one(qp_table->zones, qp_table->zones_uids[i]);
|
if (NULL == bitmap)
|
continue;
|
|
mlx4_bitmap_cleanup(bitmap);
|
}
|
mlx4_zone_allocator_destroy(qp_table->zones);
|
kfree(qp_table->bitmap_gen);
|
qp_table->bitmap_gen = NULL;
|
qp_table->zones = NULL;
|
}
|
}
|
|
int mlx4_init_qp_table(struct mlx4_dev *dev)
|
{
|
struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table;
|
int err;
|
int reserved_from_top = 0;
|
int reserved_from_bot;
|
int k;
|
int fixed_reserved_from_bot_rv = 0;
|
int bottom_reserved_for_rss_bitmap;
|
u32 max_table_offset = dev->caps.dmfs_high_rate_qpn_base +
|
dev->caps.dmfs_high_rate_qpn_range;
|
|
spin_lock_init(&qp_table->lock);
|
INIT_RADIX_TREE(&dev->qp_table_tree, GFP_ATOMIC);
|
if (mlx4_is_slave(dev))
|
return 0;
|
|
/* We reserve 2 extra QPs per port for the special QPs. The
|
* block of special QPs must be aligned to a multiple of 8, so
|
* round up.
|
*
|
* We also reserve the MSB of the 24-bit QP number to indicate
|
* that a QP is an XRC QP.
|
*/
|
for (k = 0; k <= MLX4_QP_REGION_BOTTOM; k++)
|
fixed_reserved_from_bot_rv += dev->caps.reserved_qps_cnt[k];
|
|
if (fixed_reserved_from_bot_rv < max_table_offset)
|
fixed_reserved_from_bot_rv = max_table_offset;
|
|
/* We reserve at least 1 extra for bitmaps that we don't have enough space for*/
|
bottom_reserved_for_rss_bitmap =
|
roundup_pow_of_two(fixed_reserved_from_bot_rv + 1);
|
dev->phys_caps.base_sqpn = ALIGN(bottom_reserved_for_rss_bitmap, 8);
|
|
{
|
int sort[MLX4_NUM_QP_REGION];
|
int i, j;
|
int last_base = dev->caps.num_qps;
|
|
for (i = 1; i < MLX4_NUM_QP_REGION; ++i)
|
sort[i] = i;
|
|
for (i = MLX4_NUM_QP_REGION; i > MLX4_QP_REGION_BOTTOM; --i) {
|
for (j = MLX4_QP_REGION_BOTTOM + 2; j < i; ++j) {
|
if (dev->caps.reserved_qps_cnt[sort[j]] >
|
dev->caps.reserved_qps_cnt[sort[j - 1]])
|
swap(sort[j], sort[j - 1]);
|
}
|
}
|
|
for (i = MLX4_QP_REGION_BOTTOM + 1; i < MLX4_NUM_QP_REGION; ++i) {
|
last_base -= dev->caps.reserved_qps_cnt[sort[i]];
|
dev->caps.reserved_qps_base[sort[i]] = last_base;
|
reserved_from_top +=
|
dev->caps.reserved_qps_cnt[sort[i]];
|
}
|
}
|
|
/* Reserve 8 real SQPs in both native and SRIOV modes.
|
* In addition, in SRIOV mode, reserve 8 proxy SQPs per function
|
* (for all PFs and VFs), and 8 corresponding tunnel QPs.
|
* Each proxy SQP works opposite its own tunnel QP.
|
*
|
* The QPs are arranged as follows:
|
* a. 8 real SQPs
|
* b. All the proxy SQPs (8 per function)
|
* c. All the tunnel QPs (8 per function)
|
*/
|
reserved_from_bot = mlx4_num_reserved_sqps(dev);
|
if (reserved_from_bot + reserved_from_top > dev->caps.num_qps) {
|
mlx4_err(dev, "Number of reserved QPs is higher than number of QPs\n");
|
return -EINVAL;
|
}
|
|
err = mlx4_create_zones(dev, reserved_from_bot, reserved_from_bot,
|
bottom_reserved_for_rss_bitmap,
|
fixed_reserved_from_bot_rv,
|
max_table_offset);
|
|
if (err)
|
return err;
|
|
if (mlx4_is_mfunc(dev)) {
|
/* for PPF use */
|
dev->phys_caps.base_proxy_sqpn = dev->phys_caps.base_sqpn + 8;
|
dev->phys_caps.base_tunnel_sqpn = dev->phys_caps.base_sqpn + 8 + 8 * MLX4_MFUNC_MAX;
|
|
/* In mfunc, calculate proxy and tunnel qp offsets for the PF here,
|
* since the PF does not call mlx4_slave_caps */
|
dev->caps.spec_qps = kcalloc(dev->caps.num_ports,
|
sizeof(*dev->caps.spec_qps),
|
GFP_KERNEL);
|
if (!dev->caps.spec_qps) {
|
err = -ENOMEM;
|
goto err_mem;
|
}
|
|
for (k = 0; k < dev->caps.num_ports; k++) {
|
dev->caps.spec_qps[k].qp0_proxy = dev->phys_caps.base_proxy_sqpn +
|
8 * mlx4_master_func_num(dev) + k;
|
dev->caps.spec_qps[k].qp0_tunnel = dev->caps.spec_qps[k].qp0_proxy + 8 * MLX4_MFUNC_MAX;
|
dev->caps.spec_qps[k].qp1_proxy = dev->phys_caps.base_proxy_sqpn +
|
8 * mlx4_master_func_num(dev) + MLX4_MAX_PORTS + k;
|
dev->caps.spec_qps[k].qp1_tunnel = dev->caps.spec_qps[k].qp1_proxy + 8 * MLX4_MFUNC_MAX;
|
}
|
}
|
|
|
err = mlx4_CONF_SPECIAL_QP(dev, dev->phys_caps.base_sqpn);
|
if (err)
|
goto err_mem;
|
|
return err;
|
|
err_mem:
|
kfree(dev->caps.spec_qps);
|
dev->caps.spec_qps = NULL;
|
mlx4_cleanup_qp_zones(dev);
|
return err;
|
}
|
|
void mlx4_cleanup_qp_table(struct mlx4_dev *dev)
|
{
|
if (mlx4_is_slave(dev))
|
return;
|
|
mlx4_CONF_SPECIAL_QP(dev, 0);
|
|
mlx4_cleanup_qp_zones(dev);
|
}
|
|
int mlx4_qp_query(struct mlx4_dev *dev, struct mlx4_qp *qp,
|
struct mlx4_qp_context *context)
|
{
|
struct mlx4_cmd_mailbox *mailbox;
|
int err;
|
|
mailbox = mlx4_alloc_cmd_mailbox(dev);
|
if (IS_ERR(mailbox))
|
return PTR_ERR(mailbox);
|
|
err = mlx4_cmd_box(dev, 0, mailbox->dma, qp->qpn, 0,
|
MLX4_CMD_QUERY_QP, MLX4_CMD_TIME_CLASS_A,
|
MLX4_CMD_WRAPPED);
|
if (!err)
|
memcpy(context, mailbox->buf + 8, sizeof(*context));
|
|
mlx4_free_cmd_mailbox(dev, mailbox);
|
return err;
|
}
|
EXPORT_SYMBOL_GPL(mlx4_qp_query);
|
|
int mlx4_qp_to_ready(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
|
struct mlx4_qp_context *context,
|
struct mlx4_qp *qp, enum mlx4_qp_state *qp_state)
|
{
|
int err;
|
int i;
|
enum mlx4_qp_state states[] = {
|
MLX4_QP_STATE_RST,
|
MLX4_QP_STATE_INIT,
|
MLX4_QP_STATE_RTR,
|
MLX4_QP_STATE_RTS
|
};
|
|
for (i = 0; i < ARRAY_SIZE(states) - 1; i++) {
|
context->flags &= cpu_to_be32(~(0xf << 28));
|
context->flags |= cpu_to_be32(states[i + 1] << 28);
|
if (states[i + 1] != MLX4_QP_STATE_RTR)
|
context->params2 &= ~cpu_to_be32(MLX4_QP_BIT_FPP);
|
err = mlx4_qp_modify(dev, mtt, states[i], states[i + 1],
|
context, 0, 0, qp);
|
if (err) {
|
mlx4_err(dev, "Failed to bring QP to state: %d with error: %d\n",
|
states[i + 1], err);
|
return err;
|
}
|
|
*qp_state = states[i + 1];
|
}
|
|
return 0;
|
}
|
EXPORT_SYMBOL_GPL(mlx4_qp_to_ready);
|
|
u16 mlx4_qp_roce_entropy(struct mlx4_dev *dev, u32 qpn)
|
{
|
struct mlx4_qp_context context;
|
struct mlx4_qp qp;
|
int err;
|
|
qp.qpn = qpn;
|
err = mlx4_qp_query(dev, &qp, &context);
|
if (!err) {
|
u32 dest_qpn = be32_to_cpu(context.remote_qpn) & 0xffffff;
|
u16 folded_dst = folded_qp(dest_qpn);
|
u16 folded_src = folded_qp(qpn);
|
|
return (dest_qpn != qpn) ?
|
((folded_dst ^ folded_src) | 0xC000) :
|
folded_src | 0xC000;
|
}
|
return 0xdead;
|
}
|
